Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net income (loss)	$ 1,198	$ (321)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation, amortization and other non-cash items	132	177
Net (gains) losses on investments and derivatives	164	(14)
Pension and other postretirement remeasurement (gains) losses	(2)	(53)
Changes in:
Policy benefits and other insurance reserves	323	1,080
Unearned premiums	267	199
Deferred policy acquisition costs	(12)	(29)
Premium installment receivables, net	(549)	(317)
Reinsurance recoverables, net	82	91
Income taxes	217	(125)
Other operating assets and liabilities	(154)	(87)
Net cash provided by operating activities	1,666	601
Proceeds from sales
Fixed income securities	6,719	7,008
Equity securities	500	3,739
Limited partnership interests	130	414
Other investments	84	55
Investment collections
Fixed income securities	538	646
Mortgage loans	7	22
Other investments	6	25
Investment purchases
Fixed income securities	(9,592)	(8,424)
Equity securities	(430)	(1,187)
Limited partnership interests	(237)	(226)
Mortgage loans	0	(41)
Other investments	(40)	(73)
Change in short-term and other investments, net	966	(2,675)
Purchases of property and equipment, net	(41)	(79)
Proceeds from sale of property and equipment	18	0
Net cash used in investing activities	(1,372)	(796)
Cash flows from financing activities
Proceeds from issuance of debt	0	744
Redemption and repayment of debt	0	(250)
Contractholder fund deposits	34	33
Contractholder fund withdrawals	(8)	(9)
Dividends paid on common stock	(233)	(224)
Dividends paid on preferred stock	(29)	(26)
Treasury stock purchases	0	(153)
Shares reissued under equity incentive plans, net	80	6
Other	(10)	0
Net cash (used in) provided by financing activities	(166)	121
Net increase (decrease) in cash	128	(74)
Cash at beginning of period	722	736
Cash at end of period	$ 850	$ 662